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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2017 dubenju@126.com.<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package org.teapot.db;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.util.Map;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>/**<a name="line.22"></a>
<span class="sourceLineNo">023</span> * 从SQL到Java数据类型映射的类。<a name="line.23"></a>
<span class="sourceLineNo">024</span> * @author dubenju@126.com<a name="line.24"></a>
<span class="sourceLineNo">025</span> * @since 0.0.1<a name="line.25"></a>
<span class="sourceLineNo">026</span> */<a name="line.26"></a>
<span class="sourceLineNo">027</span>public class TypeJavaDb {<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>  private static volatile TypeJavaDb INSTANCE;<a name="line.29"></a>
<span class="sourceLineNo">030</span><a name="line.30"></a>
<span class="sourceLineNo">031</span>  private Map&lt;String, String&gt; typeNameJava = new ConcurrentHashMap&lt;String, String&gt;();<a name="line.31"></a>
<span class="sourceLineNo">032</span>  private Map&lt;String, TypeJavaDb&gt; typeDb = new ConcurrentHashMap&lt;String, TypeJavaDb&gt;();<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>  /**<a name="line.34"></a>
<span class="sourceLineNo">035</span>   * 获取实例.<a name="line.35"></a>
<span class="sourceLineNo">036</span>   * @return 实例<a name="line.36"></a>
<span class="sourceLineNo">037</span>   * @since 0.0.1<a name="line.37"></a>
<span class="sourceLineNo">038</span>   */<a name="line.38"></a>
<span class="sourceLineNo">039</span>  public static TypeJavaDb getInstance() {<a name="line.39"></a>
<span class="sourceLineNo">040</span>    if (TypeJavaDb.INSTANCE == null) {<a name="line.40"></a>
<span class="sourceLineNo">041</span>      synchronized (TypeJavaDb.class) {<a name="line.41"></a>
<span class="sourceLineNo">042</span>        if (TypeJavaDb.INSTANCE == null) {<a name="line.42"></a>
<span class="sourceLineNo">043</span>          TypeJavaDb.INSTANCE = new TypeJavaDb();<a name="line.43"></a>
<span class="sourceLineNo">044</span>          TypeJavaDb.INSTANCE.setup();<a name="line.44"></a>
<span class="sourceLineNo">045</span>          if ("mysql".equalsIgnoreCase(TeapotDb.getInstance().getDbType())) {<a name="line.45"></a>
<span class="sourceLineNo">046</span>            TypeJavaDb.INSTANCE.typeDb.put("mysql", new TypeJavaMysql());<a name="line.46"></a>
<span class="sourceLineNo">047</span>          } else if ("sqlite".equalsIgnoreCase(TeapotDb.getInstance().getDbType())) {<a name="line.47"></a>
<span class="sourceLineNo">048</span>            TypeJavaDb.INSTANCE.typeDb.put("sqlite", new TypeJavaSqlite());<a name="line.48"></a>
<span class="sourceLineNo">049</span>          } else if ("xml".equalsIgnoreCase(TeapotDb.getInstance().getDbType())) {<a name="line.49"></a>
<span class="sourceLineNo">050</span>            TypeJavaDb.INSTANCE.typeDb.put("xml", new TypeJavaXml());<a name="line.50"></a>
<span class="sourceLineNo">051</span>          } else {<a name="line.51"></a>
<span class="sourceLineNo">052</span>            TypeJavaDb.INSTANCE.typeDb.put("mysql", new TypeJavaMysql());<a name="line.52"></a>
<span class="sourceLineNo">053</span>            TypeJavaDb.INSTANCE.typeDb.put("sqlite", new TypeJavaSqlite());<a name="line.53"></a>
<span class="sourceLineNo">054</span>            TypeJavaDb.INSTANCE.typeDb.put("xml", new TypeJavaXml());<a name="line.54"></a>
<span class="sourceLineNo">055</span>          }<a name="line.55"></a>
<span class="sourceLineNo">056</span>        }<a name="line.56"></a>
<span class="sourceLineNo">057</span>      }<a name="line.57"></a>
<span class="sourceLineNo">058</span>    }<a name="line.58"></a>
<span class="sourceLineNo">059</span>    return TypeJavaDb.INSTANCE;<a name="line.59"></a>
<span class="sourceLineNo">060</span>  }<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>  /**<a name="line.62"></a>
<span class="sourceLineNo">063</span>   * 通过数据库类型获取从SQL到Java数据类型的映射类.<a name="line.63"></a>
<span class="sourceLineNo">064</span>   * @param type 数据库类型。<a name="line.64"></a>
<span class="sourceLineNo">065</span>   * @return 从SQL到Java数据类型的映射类。<a name="line.65"></a>
<span class="sourceLineNo">066</span>   * @since 0.0.1<a name="line.66"></a>
<span class="sourceLineNo">067</span>   */<a name="line.67"></a>
<span class="sourceLineNo">068</span>  public static TypeJavaDb getTypeJava(String type) {<a name="line.68"></a>
<span class="sourceLineNo">069</span>    TypeJavaDb typeJavaDb = TypeJavaDb.getInstance().typeDb.get(type);<a name="line.69"></a>
<span class="sourceLineNo">070</span>    if (typeJavaDb == null) {<a name="line.70"></a>
<span class="sourceLineNo">071</span>      System.out.println("WARNING!!! 由于出现了未注册的数据库类型(" + type + ")，请联系下作者追加一下。");<a name="line.71"></a>
<span class="sourceLineNo">072</span>      typeJavaDb = TypeJavaDb.getInstance();<a name="line.72"></a>
<span class="sourceLineNo">073</span>    }<a name="line.73"></a>
<span class="sourceLineNo">074</span>    return typeJavaDb;<a name="line.74"></a>
<span class="sourceLineNo">075</span>  }<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span>  /**<a name="line.77"></a>
<span class="sourceLineNo">078</span>   * 构造函数.<a name="line.78"></a>
<span class="sourceLineNo">079</span>   * @since 0.0.1<a name="line.79"></a>
<span class="sourceLineNo">080</span>   */<a name="line.80"></a>
<span class="sourceLineNo">081</span>  protected TypeJavaDb() {<a name="line.81"></a>
<span class="sourceLineNo">082</span>    super();<a name="line.82"></a>
<span class="sourceLineNo">083</span>  }<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span>  /**<a name="line.85"></a>
<span class="sourceLineNo">086</span>   * 通过数据库类型名称返回Java类型名称.<a name="line.86"></a>
<span class="sourceLineNo">087</span>   * @param typeName 数据库类型名称。<a name="line.87"></a>
<span class="sourceLineNo">088</span>   * @return Java类型名称。<a name="line.88"></a>
<span class="sourceLineNo">089</span>   * @since 0.0.1<a name="line.89"></a>
<span class="sourceLineNo">090</span>   */<a name="line.90"></a>
<span class="sourceLineNo">091</span>  public String getJavaType(String typeName) {<a name="line.91"></a>
<span class="sourceLineNo">092</span>    if (this.typeNameJava.size() &lt;= 0) {<a name="line.92"></a>
<span class="sourceLineNo">093</span>      setup();<a name="line.93"></a>
<span class="sourceLineNo">094</span>    }<a name="line.94"></a>
<span class="sourceLineNo">095</span>    String key = typeName;<a name="line.95"></a>
<span class="sourceLineNo">096</span>    if (key.indexOf("(") &gt;= 0) {<a name="line.96"></a>
<span class="sourceLineNo">097</span>      key = typeName.substring(0, typeName.indexOf("(")).trim();<a name="line.97"></a>
<span class="sourceLineNo">098</span>    }<a name="line.98"></a>
<span class="sourceLineNo">099</span>    return this.typeNameJava.get(key);<a name="line.99"></a>
<span class="sourceLineNo">100</span>  }<a name="line.100"></a>
<span class="sourceLineNo">101</span><a name="line.101"></a>
<span class="sourceLineNo">102</span>  /**<a name="line.102"></a>
<span class="sourceLineNo">103</span>   * 设置从SQL到Java数据类型的映射.<a name="line.103"></a>
<span class="sourceLineNo">104</span>   * @since 0.0.1<a name="line.104"></a>
<span class="sourceLineNo">105</span>   */<a name="line.105"></a>
<span class="sourceLineNo">106</span>  protected void setup() {<a name="line.106"></a>
<span class="sourceLineNo">107</span>    setType("TINYINT", "java.lang.Integer");<a name="line.107"></a>
<span class="sourceLineNo">108</span>    setType("SMALLINT", "java.lang.Integer");<a name="line.108"></a>
<span class="sourceLineNo">109</span>    setType("INT", "java.lang.Long");<a name="line.109"></a>
<span class="sourceLineNo">110</span>    setType("INTEGER", "java.lang.Long");<a name="line.110"></a>
<span class="sourceLineNo">111</span>    setType("BIGINT", "java.lang.Long");<a name="line.111"></a>
<span class="sourceLineNo">112</span><a name="line.112"></a>
<span class="sourceLineNo">113</span>    setType("CHAR", "java.lang.String");<a name="line.113"></a>
<span class="sourceLineNo">114</span>    setType("VARCHAR", "java.lang.String");<a name="line.114"></a>
<span class="sourceLineNo">115</span>    setType("LONGVARCHAR", "java.lang.String");<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span>    setType("BLOB", "byte[]");<a name="line.117"></a>
<span class="sourceLineNo">118</span>    setType("BINARY", "byte[]");<a name="line.118"></a>
<span class="sourceLineNo">119</span>    setType("VARBINARY", "byte[]");<a name="line.119"></a>
<span class="sourceLineNo">120</span><a name="line.120"></a>
<span class="sourceLineNo">121</span>    setType("CLOB", "java.sql.Clob");<a name="line.121"></a>
<span class="sourceLineNo">122</span><a name="line.122"></a>
<span class="sourceLineNo">123</span>    setType("REAL", "java.lang.Float");<a name="line.123"></a>
<span class="sourceLineNo">124</span>    setType("DOUBLE", "java.lang.Double");<a name="line.124"></a>
<span class="sourceLineNo">125</span>    setType("FLOAT", "java.lang.Float");<a name="line.125"></a>
<span class="sourceLineNo">126</span><a name="line.126"></a>
<span class="sourceLineNo">127</span>    setType("NUMERIC", "java.math.BigDecimal");<a name="line.127"></a>
<span class="sourceLineNo">128</span>    setType("DECIMAL", "java.math.BigDecimal");<a name="line.128"></a>
<span class="sourceLineNo">129</span><a name="line.129"></a>
<span class="sourceLineNo">130</span>    setType("DATE", "java.sql.Date");<a name="line.130"></a>
<span class="sourceLineNo">131</span>    setType("TIME", "java.sql.Time");<a name="line.131"></a>
<span class="sourceLineNo">132</span>    setType("DATETIME", "java.sql.Timestamp");<a name="line.132"></a>
<span class="sourceLineNo">133</span><a name="line.133"></a>
<span class="sourceLineNo">134</span>    setType("BIT", "java.lang.Boolean");<a name="line.134"></a>
<span class="sourceLineNo">135</span>    setType("Array", "java.sql.Array");<a name="line.135"></a>
<span class="sourceLineNo">136</span>    setType("REF", "java.sql.Ref");<a name="line.136"></a>
<span class="sourceLineNo">137</span>    setType("Struct", "java.sql.Struct");<a name="line.137"></a>
<span class="sourceLineNo">138</span>  }<a name="line.138"></a>
<span class="sourceLineNo">139</span><a name="line.139"></a>
<span class="sourceLineNo">140</span>  /**<a name="line.140"></a>
<span class="sourceLineNo">141</span>   * 设置从SQL到Java数据类型的映射的方法.<a name="line.141"></a>
<span class="sourceLineNo">142</span>   * @param dbType 数据库类型名称。<a name="line.142"></a>
<span class="sourceLineNo">143</span>   * @param javaClass Java类型名称。<a name="line.143"></a>
<span class="sourceLineNo">144</span>   * @since 0.0.1<a name="line.144"></a>
<span class="sourceLineNo">145</span>   */<a name="line.145"></a>
<span class="sourceLineNo">146</span>  public void setType(String dbType, String javaClass) {<a name="line.146"></a>
<span class="sourceLineNo">147</span>    this.typeNameJava.put(dbType, javaClass);<a name="line.147"></a>
<span class="sourceLineNo">148</span>  }<a name="line.148"></a>
<span class="sourceLineNo">149</span>}<a name="line.149"></a>




























































</pre>
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